Reston, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Reston, a community in Fairfax County, Virginia.
This Afternoon
74°F
Mostly Sunny
Mostly sunny, with a high near 74. South wind around 9 mph, with gusts as high as 18 mph.
7-day forecast for Reston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Mostly Sunny | 9 mph S | 0% |
| Tonight | 63°F | Mostly Cloudy then Chance Light Rain | 7 to 12 mph S | 47% |
| Thursday | 75°F | Chance Light Rain then Mostly Cloudy | 9 to 13 mph S | 31% |
| Thursday Night | 58°F | Mostly Cloudy then Chance Light Rain | 2 to 8 mph SW | 33% |
| Friday | 69°F | Slight Chance Light Rain | 5 mph N | 23% |
| Friday Night | 49°F | Slight Chance Light Rain then Partly Cloudy | 2 to 10 mph N | 21% |
| Saturday | 61°F | Mostly Sunny | 10 to 15 mph NW | 7% |
| Saturday Night | 43°F | Mostly Clear | 10 to 14 mph NW | 4% |
| Sunday | 61°F | Mostly Sunny | 7 to 14 mph NW | 2% |
| Sunday Night | 42°F | Mostly Clear | 6 to 10 mph NW | 0% |
| Monday | 62°F | Sunny | 7 to 13 mph NW | 0% |
| Monday Night | 40°F | Mostly Clear | 2 to 6 mph W | 0% |
| Tuesday | 66°F | Mostly Sunny | 5 to 8 mph SW | 1% |
| Tuesday Night | 43°F | Mostly Clear | 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Reston (38.950, -77.346). Updated through the day.
Growing snapshot for Reston
Last spring frost
Apr 14
First fall frost
Oct 29
Growing season
198 days
Hardiness zone
7b
More local growing data for Reston: nearby ZIP 20190 weather · frost dates · planting calendar · Virginia frost dates
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Climate data from the nearest NOAA station, Vienna, Va (5.4 mi from Reston). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.